My Inquiry
My Account
Microchip Technology 1N4759P/TR12
- Part No.:
- 1N4759P/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4759P/TR12.pdf
- Description:
- DIODE ZENER 62V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,114
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4759P/TR12 from Microsemi is a 1.0 W axial-lead silicon Zener diode with nominal zener voltage 62 V, ±5% tolerance (A-suffix), DO-41 package, and 4.0 mA test current (IZT). It provides stable voltage regulation in power supply reference, overvoltage protection, and voltage-clamping circuits across industrial temperature range.
For engineers reviewing the 1N4759P/TR12 datasheet, 1N4759P/TR12 pinout, 1N4759P/TR12 application, or 1N4759P/TR12 equivalent, key selection factors include its 62 V zener voltage, 125 Ω dynamic impedance at 4.0 mA, 5 μA reverse leakage at 47.1 V, 70 mA maximum regulator current at 50°C, and DO-41 mechanical compatibility with standard through-hole PCB layouts.
Technical Context
This device operates in reverse breakdown to maintain a stable 62 V reference across a wide current range (1–70 mA), with sharp knee characteristics confirmed by dual-point zener impedance measurement per MicroNote 202. Its thermal resistance is 45 °C/W junction-to-lead (3/8" lead length) and 105 °C/W junction-to-ambient on FR4 board.
The 1N4759P/TR12 exhibits a positive temperature coefficient above 5 V, typical for mid-voltage Zeners, and is rated for -65°C to +150°C operating/storage temperature. It uses void-free thermosetting epoxy case (UL94V-0) with tin-lead or RoHS-compliant matte-tin plating, and is moisture-sensitive Level 1-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% at IZT = 4.0 mA - defines precise clamping/reference level under standard test conditions |
| Power Dissipation | 1.0 W at TL < 105°C (3/8" lead) - sets maximum continuous DC power handling before thermal derating |
| Dynamic Impedance (ZZT) | 125 Ω at IZT = 4.0 mA - indicates low AC impedance for stable regulation under varying load currents |
| Reverse Leakage Current | 5 μA max at VR = 47.1 V - ensures minimal standby power loss in high-impedance bias networks |
| Maximum Regulator Current | 70 mA at TA = 50°C - determines peak DC current capability before thermal saturation |
| Forward Voltage | 1.2 V max at IF = 200 mA - defines conduction drop when used in forward-biased protection paths |
| Operating Temperature | -65°C to +150°C - supports deployment in automotive under-hood, industrial control, and aerospace environments |
Pinout & Package
DO-41 (JEDEC DO-204AL) plastic axial-lead package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Banded lead | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Registered Zener | Complies with JEDEC 1N47xxA standard - ensures interoperability and qualification consistency across suppliers |
| Low Thermal Resistance | 45 °C/W junction-to-lead - enables higher power density in compact leaded designs without forced cooling |
| Moisture Sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - eliminates pre-bake step and reduces assembly cost |
| ESD Robustness | Nonsensitive per MIL-STD-750 Method 1020 - withstands handling without special ESD controls |
| RoHS Compliant Option | e3 suffix available - meets EU RoHS Directive 2011/65/EU with annealed matte-tin plating |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Precision voltage reference element providing stable 62 V setpoint for error detection. Use Value: Enables accurate output regulation within ±5% across temperature and line variations using only passive components. | Use Scenario: Clamping transient surges on 48 V DC bus lines in telecom or industrial equipment. IC Role / Device Role / Timing Role: Shunt overvoltage protector diverting excess energy to ground when bus exceeds 62 V. Use Value: Limits peak voltage to safe levels with 125 Ω dynamic impedance ensuring fast response to fast-rising transients. |
| Voltage-Level Translation | Signal Conditioning Clamp |
Use Scenario: Biasing op-amp inputs or logic interfaces requiring 62 V reference in high-side sensing circuits. IC Role / Device Role / Timing Role: Passive level translator establishing fixed DC offset for analog signal chains. Use Value: Provides repeatable 62 V reference point without active circuitry, reducing component count and failure modes. | Use Scenario: Protecting ADC inputs or microcontroller GPIOs from accidental 60+ V excursions in sensor front-ends. IC Role / Device Role / Timing Role: Input clamp limiting signal swing to prevent latch-up or damage. Use Value: Leverages 5 μA leakage at 47.1 V to minimize loading while maintaining tight 62 V clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4759A | No TR12 tape-and-reel packaging; bulk or ammo-pack only | Lacks standardized reel delivery for automated SMT placement | Select 1N4759P/TR12 for pick-and-place production; choose 1N4759A for manual prototyping or low-volume repair |
| MMBZ5259BS | SOT-23 surface-mount package; 62 V, 225 mW rating; 100 Ω ZZT | Lower power rating and different thermal profile; not mechanically interchangeable | Choose MMBZ5259BS only for space-constrained PCBs where 1 W dissipation is not required |
Compared with 1N4759A and MMBZ5259BS, the 1N4759P/TR12 delivers full 1 W power handling in a tape-and-reel format optimized for through-hole auto-insertion, while maintaining JEDEC-standard DO-41 footprint and proven reliability in high-temperature industrial environments.
Availability
1N4759P/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage-level translation applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N4759P/TR12 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N47xxA series was designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems, emphasizing JEDEC compliance, thermal stability, and long-term parametric consistency.
FAQ
What is the zener voltage tolerance of the 1N4759P/TR12?
The 1N4759P/TR12 has a nominal zener voltage of 62 V with ±5% tolerance, as indicated by the "A" suffix in the part number per JEDEC registration. This means the actual measured VZ falls between 58.9 V and 65.1 V at IZT = 4.0 mA and TL = 25°C. The tolerance is guaranteed across the full operating temperature range of -65°C to +150°C.
Does the 1N4759P/TR12 require dry packing before PCB assembly?
No, the 1N4759P/TR12 is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it does not absorb significant moisture during normal factory handling and requires no dry pack or baking prior to soldering. This simplifies manufacturing flow and reduces risk of popcorning during reflow or wave soldering.
What is the maximum steady-state current the 1N4759P/TR12 can regulate continuously?
The 1N4759P/TR12 supports a maximum regulator current (IZM) of 70 mA at ambient temperature TA = 50°C when mounted on FR4 board with specified copper pad geometry. At higher temperatures, current must be reduced per the derating curve in Figure 1 of the datasheet to maintain 1.0 W total power dissipation limit.
Is the 1N4759P/TR12 RoHS compliant?
Yes - the "e3" suffix denotes RoHS compliance, and the 1N4759P/TR12 uses annealed matte-tin plating per MIL-STD-750 Method 2026. While the base part number does not include "e3", Microsemi offers the RoHS-compliant version as 1N4759P-e3/TR12; standard 1N4759P/TR12 may contain leaded terminations unless otherwise specified.
How is polarity marked on the 1N4759P/TR12?
The cathode of the 1N4759P/TR12 is marked by a distinct color band on the plastic DO-41 body. During Zener operation, the banded (cathode) end must be held at a more positive potential than the non-banded (anode) end. Forward conduction occurs when anode is positive relative to cathode, with VF ≤ 1.2 V at 200 mA.
1N4759P/TR12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 47.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4759P/TR12 FAQ
1.How can I place an order for 1N4759P/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4759P/TR12 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N4759P/TR12 reliable?
The price and inventory of 1N4759P/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4759P/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4759P/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4759P/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4759P/TR12?
1N4759P/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4759P/TR12 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N4759P/TR12?
For technical support, including 1N4759P/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4759P/TR12 requirements.
6.How does Aetrix verify that 1N4759P/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4759P/TR12 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N4759P/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4759P/TR12?
All 1N4759P/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4759P/TR12, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N4759P/TR12 part is unused and in its original packaging.
Return procedure for 1N4759P/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4759P/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
